Drag harrow cleaner



May 5, 1931. w. J. HURST 1,804,100

' DRAG HARROW CLEANER Filed Sept. 5, 1929 s Sheets-Sheet 1 In ven iorm'iiz'anz ffiilrsi A ffomey May 5, 1931. w. J. HURST DRAG HARROW CLEANERFiled Sept. 5, 1929 3 Sheets-Sheet 2 Inventor Wiiz'anz JflZzrs'Z' M Aiiorney May 5, 1931. w. J. HURST 1,804,100

DRAG HARROW CLEANER Filed Sept. 5, 1929 5 Sheets-Sheet 3 Inventor R .2 232222212 0 15217 67 patented May 5, 1931 \VILLIAM J. HUB-ST, OFMAQ'UOKETA, IOWA v DRAG HARROW CLEANER Application filed September 5,1929. Serial No. 390,530.

[he present invention relates to a drag harrow and particularly to anattachment therefor which has for its prime object to provide meanswhereby the drag harrow may be readily cleaned of any weeds, cornstalks, or any other object caught on the teeth thereof while inoperation.

Another very important object of the invention resides in the provisionof a cleaning device of this naturewhich saves time and labor, is easyto manipulate, simple in construction, inexpensive to manufacture,strong and durable, and thoroughly eflicient and reliable in use andoperation.

With the above and numerous other objects in view as will appear as thedescription proceeds, the invention resides in certain novel features ofconstruction, and in the combination and arrangement of Jarts as will behereinafter more fully descri ed and claimed.

In the drawings: Figure 1 is a side elevation of the drag harrow showingmy attachment mounted there- Figure 2 is a similar view showlng theharrow tilted and in longitudinal section,

Figure 3 is an enlarged detail sectional view through the attachment,

Figure 4 is a sectional view taken substantially on the line H of Figure3,

Figure 5 is a sectional view taken substantially on the line 55 ofFigure 3, V

Figure 6 is a perspective view of the lower end of the lever, and

Figure 7 is a sectional view taken substantially on the line 7-7 ofFigure 3.

Referring to the drawing in detail it will be seen that the numeral 5denotes a well known form of drag harrow including among other elementsa center transverse shaft 6. A bushing 7 formed in sections is disposedcircumjacent the shaft 6 by means of bolts 8 engaged in ears 9 and atone end has a lug e5 10 rising therefrom in which the lower end of alever 11 is pivoted by means of pin 12.

A sectional hub 14 is disposed circumj acent the bushing 7 to rockthere-on being mounted by means of bolts 15 extending through ears 16and this hub 14 has oppositely radiating arms 17 terminating in groundengaging teeth 18. An annular ratchet member 19 is formed in sectionsand fixed to the hub 14 by means of bolts 20 or in any other suitablemanner. v

A lug 21 extends from the lever 11 and has a pin 22 slidabletherethrough on the lower end of which is a pawl 23 cooperatable withthe ratchet 19 by means of spring 24 pressing the pawl in engagementwith the ratchet.

This pawl is slid-able through an ear 25 projecting from the lever 11.An operating rod 26 is engaged with the upper end of the lever andextends through a guide eye 27 on a the lever 28 of the harrow.

A cable 30 is attached to the upper end of the lever 11 and extendsforwardly under a guide pulley 31 mounted in brackets 32 rising from thefront end of the harrow. A spring 33 is engaged with the frame of theharrow and the lever 11 to normally hold the lever 11 in the positionshown in Figure 1.

When it is desired to clean the teeth of the harrow and the harrow ismoving forwardly,

the lever 11 is rocked forwardly by pushing forwardly on the rod 26 orpulling forwardly on the cable 30 thereby rocking the lever 11 andcausing similar rocking movement of the ratchet 19, and the hub 14thereby swinging a one of the arms 17 downwardly to engage its foot 18with the ground as is indicated in dotted lines in Figure 1 therebyraising the forward end of the harrow andallowing any objects on thefront or forward teeth of the harrow to drop therefrom.

As soon as the rod 26 or cable 30 is released the spring 33 returns thelever 11 to its initial position. With the harrow in the position shownin dotted lines in Figure 1 it will be seen that as it is pulledforwardly it will then rock to the position shown in F igure'2, so as toallow objects to drop from the rearward teeth of the harrow and then asthe harrow pulls forwardly the arms will swing around, the ratchethaving its teeth passing .by the pawl as will be readily appreciateduntil the harrow is back again in the position shown in Figure 1.

It is thought that the construction, operation, utility and advantagesof this invention will now be quite apparent to those skilled in thisart without a more detailed description thereof.

The advantage of this draw harrow cleaner is that it saves time andlabor as in dragging, the operator has to lift the drag up by hand andclean it whereas with this cleaner he does not have to stop his team ortractor but just pull the rope or push the rod and the team or tractordoes the work.

This attachment is made in parts so that it can be put on any drawharrow without taking the harrow apart.

The present embodiment of the invention, of course, has been describedin considerable detail merely for the purposes of exemplification sincein actual practice it attains the features of advantage enumerated asdesirable in the statement of the invention and the above description.

It is apparent that changes in the details of construction, and in thecombination and arrangement of parts may be resorted to withoutdeparting from the spirit or scope of the invention as hereinafterclaimed or sacrificing any of its advantages.

Having thus described my invention, what I claim as new is:

1. In adrag harrow of the class described including a shaft, a hubrockable on the shaft, arms extending from the hub, a ratchet on thehub, a lever, means for rockably mounting the lever, a spring pressedpawl in the lever engageable with the ratchet, said arms terminating inground engaging teeth, a spring for holding the lever in a normalpredetermined position.

2. In a drag harrow of the class described including a shaft, a hubrockable on the shaft, arms extending from the hub, a ratchet on thehub, a lever, means for rockably mounting the lever, a spring pressedpawl in the lever engageable with the ratchet, said arms terminating inground engaging teeth, a spring for holding the lever in a normalpredetermined position, remote control means for the lever.

3. A cleaner for drag harrows comprising, in combination a drag harrowincluding a shaft, a bushing on said shaft having a lug at one end, ahub rockable on the said bushing and having arms extending radiallytherefrom, said arms terminating in ground engaging teeth, the ratcheton the said hub,

a lever pivoted to the lug of said bushing, aspring tensioned pawlcarried by the lever and engageable with the said ratchet, means foroperating the lever to rotate the said hub for disposing an arm thereofin contact with he ground, and lever tensioning means for returning thesaid lever to normal position upon release of the lever operating means.

In testimony whereof I affix my signature.

\VILLIAM J. HURST.

